Insulators have resistivity of the order of
A. 106 Ωm to 108 Ωm
B. 10-12 Ωm to 10-17 Ωm
C. 108 Ωm to 106 Ωm
D. 1012 Ωm to 1017 Ωm
Answer: Option D
A. 106 Ωm to 108 Ωm
B. 10-12 Ωm to 10-17 Ωm
C. 108 Ωm to 106 Ωm
D. 1012 Ωm to 1017 Ωm
Answer: Option D
What will be the total resistance of the three 20-Ω coils connected in series?
A. 40 Ω
B. 20 Ω
C. 60 Ω
D. 800 Ω
Superconductors are substances which
A. conduct electricity at lower temperature
B. offer high resistance to the flow of current
C. offer not resistance to the flow of current
D. conduct electricity at high temperature
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